I'm sure with a little time devotion studying the LSAT, the average examiner could get a sizable scholarship from a pretty good law school, anyway.
O really? It takes a combo of high gpa/lsat to get $$$ from law schools. And in my experience, the average examiner is pretty "average," at least in the predictable art units. I will probably over-generalize here, but I think that most people who go to the PTO straight out of engineering undergrad (especially CS/EE majors) usually don't have better options, such as engineering jobs. Yes, sure, some people want to become patent lawyers (and they soon jump the PTO to go to firms/law school), but the rest simply took the PTO job because they couldn't find anything in the industry. That means that they weren't great students in the first place - so no law school $$$. I went to the PTO from a private industry for a year or two to get patent experience, but I was simply shocked by the level of mediocrity in my art unit back in 2003-2004. Maybe things have changed, but back then, the turn-over was about 50% and the only people who stayed were the recent grads who didn't know any better and wouldn't land a job in the industry anyways. Last time I checked the employee locator in the PTO, most of these guys are still there, which figures.
As for going to law school from the PTO - you pretty much have to, if you want to leave the PTO and searching behind. If you don't go to law school, what are your other options? You can stay and build a career within the PTO (good for some, but bad for most of us). After a year or two there, you become untouchable to the engineering places anyways, unless you've had some prior experience. Or you can go to a firm and that requires a law degree, unless you want to be a permanent agent/searcher, in which case you might be better off staying in the PTO in the first place. So yeah, if you have ambitions for a career in IP outside of the PTO, you pretty much have to go to law school. Just my 2 cents.